Might be silly but..about lava

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darkartminiatures

New member
Hi all. After reading the lava articles on Cmon i just had to try it out but with something i little different. I\'m making a custom base for an avatar that has a marine lying halfway in the lava (dead, the poor soul) but I wanted to know if there would be more lava bubbles around where the marine has entered the lava. I\'ve a feeling this is a silly question but hey :)

I\'ve looked at pics of lava on various sites but they don\'t seam to show any examples of something entering the lava. :)
 
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Ritual

New member
Now, I\'m not an expert on lava so these are only my thoughts on the subject and are not to be taken as fact. :)

The lava is so hot that I think most of the organic stuff of the marine would be incinerated near the surface as he enters the lava, thus there would be no large amount of gas developing deep below the surface. Also, the lava is very thick which would make the gas that DOES develop have quite a tough journey towards the surface and the bubbles would take quite long to appear.

So, my guess is there would be no substantial concentration of bubbles near the unlucky marine.
 
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Godlikebuthumble

New member
Good point there Ritual. I guess what might change is that the lava around the marine\'s remains might be a bit cooler, so more into the red-black range? Whatcha think?
 
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Katana_Angel

Guest
I also doubt there\'d be more bubbles around the marine. The only thing that may be noticable would be the lava \'bending\' in towards the marine.
You know when you sit on a piece of foam (or, say a bed), and the place where you\'re sitting is squashed down, but the surrounding foam simply bends in towards you... depending on the consistancy and rate of cooling from the lava, that\'s what the lava would look like. Now, it woulnt\'be anything to the extreme... but just pointing out that a person would be slurped into the lava as opposed to, say, creating a splash in a pool of water.

Try to watch a nature documentary on Volcanoes (maybe find some clips online?). You can watch the surface of the lava, how it reacts, and what happens when larger chunks of the lava cool at the surface fall into the hotter stuff.
If the marine has those armor suits on (Please don\'t shoot me! I don\'t know the techno babble for 40K because I don\'t play :innocent: ), the armor would heat up very quickly to red hot. Try to show that in the areas that are close to the lava.

Geology major, at your service! :cool:
 
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darkartminiatures

New member
Godlikebuthumble: I\'m not sure if it would look a cooler colour. I\'d of thought it might be white hot with braking the skin/crust of it..dunno :( Damn. I\'m going to have think this through before starting. :(
 
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Katana_Angel

Guest
Originally posted by darkartminiatures
Godlikebuthumble: I\'m not sure if it would look a cooler colour. I\'d of thought it might be white hot with braking the skin/crust of it..dunno :( Damn. I\'m going to have think this through before starting. :(
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Your color of lava, for the most part, is going to be darker on the top, brighter on the bottom (hotter towards the middle). When a cooled piece of lava on the top sinks, it does indeed expose hotter lava beneath it. But unless this lava has a thin crust of cooled on top of it, you really won\'t notice too much of a difference color-wise, I don\'t think.
 
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Ritual

New member
Maybe you could make a cracked crust surrounding the marine, while the rest of the lava would be more smooth. In the cracks the white hot interior would shine through and then the cracks would fade out into the smoother, unbroken lava surface. Just an idea... :)
 
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Katana_Angel

Guest
Originally posted by Spacemunkie
Why worry?! Just do what looks cool - this is fantasy damnit!
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No! It must be scientifically accurate!! ;)
Yeah, it\'s true. This is on a tiny scale, too. Just start playing around and see what looks good. And good luck. :)
 
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vincegamer

Active member
Very disappointingly I could not find any images of hot lava hitting something metal.

Here is a good shot of when lava hits something organic - specifically a wooden stick someone stuck in it.
Burning stick
The man inside the suit would burst into flames (even in the absence of oxygen!)

And of course if the lava has had time to cool, you get something like this:

lavacar.jpg
 
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SaxonAngel

nada
The space marine armour is a special hi-tech ceramic not metal.
It wouldn\'t melt. It may heat up to red hot. If the lava hit the marine when he was cool it would form a thin black crust around the armour as it cools when it hits him, but still heat up his armour cooking the poor bastard inside.

Dont go crazy about the technicallities of that tho. Just make the molten rock look good all around and only the worst nitpicks will bug you about whether the marine should melting, boiling, sizzling or fried sunny-side up or whatever.

:D

[edit] try this site for cool images of lava (you\'ll have to dig through eruption time images)
http://hvo.wr.usgs.gov/kilauea/update/archive/main.html
 
Einion

Einion

New member
Originally posted by Spacemunkie
Why worry?! Just do what looks cool - this is fantasy damnit!
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Right on :D

Orb might see this and comment, being a geologist he should know more about this than the rest of us but from watching documentaries over the years I know that lava varies in consistency from quite thin and fast moving to thick and viscous, depending on the temperature and what it\'s made of.

There are two interesting ideas here IMO - a cooled area around the marine that has a dark crust and your own of bubbles rising to the surface from underneath the armour, I\'d just pick whichever concept appeals to you and go with it.

Einion
 
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darkartminiatures

New member
Wow. Thanks for all your support with my question. I did start off with wanting a bubbling lava pool but i think it was Ritual that suggested a crust. ;) I think this sounds more appealing as i can add more texture and would solve the problem of how to paint lava covering a large area and get it looking correct. Some interesting replies on the marine and I\'m sure they would be nice little touches which i shall be trying. All i have to do now is try and paint it :eek: I\'ll let you know if i mess it up or not.
 
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twjolson

New member
I\'ve seen pictures of things getting tossed in lava, the lava doesn\'t do anything, but whatever is thrown in will burst into flames. The Lava has so much heat, hundreds and hundreds of degrees, and there is so much lave, that anything thrown in won\'t cause it to change, theoretically, it will cool down, but not enough to do a visible effect. Based on thermodynamics, it wouldn\'t even lower the lava down a degree.
Nor would it cause the lava to bubble, as that would require the lava to heat up, and adding a colder item into a hotter one won\'t produce that.
All totalled, the lava will be fine, with ripples at the most, the marine will be engulfed in flames.
 
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WurzagUdUraZahuba

Guest
Mayba a little to late but try http://images.google.ca/imgres?imgurl=http://www.tk421.net/lotr/film/rotk/img/rotk2283.jpg&imgrefurl=http://www.tk421.net/lotr/film/rotk/30.html&h=101&w=240&sz=38&tbnid=8BFzfJ7brHcJ:&tbnh=43&tbnw=104&hl=en&start=2&prev=/images%3Fq%3Dgollum%2Blava%26svnum%3D10%26hl%3Den%26lr%3D%26sa%3DG
 
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vincegamer

Active member
Originally posted by twjolson
....Nor would it cause the lava to bubble, as that would require the lava to heat up, and adding a colder item into a hotter one won\'t produce that.
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I was reading that you do get bubbles in lava, but they are very explosive.
They come when the lava flows over organic matter like a pineapple palm tree or similar. The tree is cut off from oxygen but the high heat causes it to burn anyway, and fire without oxygen produces a methane gas explosion under the lava.
 
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